Thanks for the video amunptah, you've done an amazing job!
I love this game and was lucky enough to interview many of the people involved in its creation, including Jane Jensen who actually said this about Oxford:
"I had been there before, but I went back specifically for the game looking for locations. Using real locations and real history is something the Gabriel Knight fans always loved about the series so I pulled in as much ‘real Oxford’ as possible in this game."
Full interview available here:
INTERVIEW – In Conversation With Jane Jensen (Game Designer, Gabriel Knight Trilogy/Gray Matter)
I really do think using real locations added something truly special to this game. Thanks again for a great video, I watched it from beginning to end and the time flew by, didn't even realise it was 30 mins long!